This transaction set communicates updates to railroad mark registrations within the rail transportation industry. A railroad company or authorized agent sends the 434 to railroad authorities or administrative bodies responsible for maintaining mark registers. The transmission typically follows a request for registration updates or occurs as part of routine mark registration maintenance activities. Key segments include the BRR (Beginning Segment for Railroad Mark Register Update Activity), which initiates the update request and specifies the type of mark registration activity being reported; the DTM (Date/Time Reference) segments, which provide relevant dates such as the effective date of the mark update; and the N1 (Name) loop, which identifies the parties involved in the mark registration, including the mark owner and other relevant entities.

Consider a scenario where Union Pacific Railroad needs to update its registered marks with the railroad industry’s central register. Union Pacific’s operations team sends a 434 transaction to the industry mark registry authority, specifying in the BRR segment that they are updating an existing mark registration. The DTM segments include the date the mark change becomes effective. The N1 loop identifies Union Pacific Railroad as the mark owner in one occurrence, provides the railroad’s address through N3 and N4 segments, and includes contact information via the PER segment. A second N1 loop iteration identifies the regional railroad authority responsible for that geographic area. The registry authority receives the 434 and processes the mark registration updates accordingly.